Low voltage class AB CMOS amplifier

Feng Wang, Randy Heineke, Ramesh Harjani

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


A new class AB CMOS operational amplifier (opamp) principle is presented. It is based on a novel self-biasing input transistor technique. The operational transconductance amplifier (OTA) utilizing this principle exhibits similar small signal characteristics of conventional OTAs. It has, however, a superior large signal behavior and its settling time is not slew-rate limited. It also overcomes the difficulties of unconditional stability inherent in some class AB opamps. It is particularly suited for low voltage operation. Due to the generality of the proposed technique, the principle can be applied to many other circuit topologies.

Original languageEnglish (US)
Pages (from-to)393-396
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
StatePublished - 1996
EventProceedings of the 1996 IEEE International Symposium on Circuits and Systems, ISCAS. Part 1 (of 4) - Atlanta, GA, USA
Duration: May 12 1996May 15 1996


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